<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="公告标题" prop="noticeTitle">
        <el-input
          v-model="queryParams.noticeTitle"
          placeholder="请输入公告标题"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="操作人员" prop="createBy">
        <el-input
          v-model="queryParams.createBy"
          placeholder="请输入操作人员"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="类型" prop="noticeType">
        <el-select v-model="queryParams.noticeType" placeholder="公告类型" clearable>
          <el-option
            v-for="dict in dict.type.sys_notice_type"
            :key="dict.value"
            :label="dict.label"
            :value="dict.value"
          />
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['system:notice:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['system:notice:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['system:notice:remove']"
        >删除</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="noticeList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="序号" align="center" prop="noticeId" width="100" />
      <el-table-column
        label="公告标题"
        align="center"
        prop="noticeTitle"
        :show-overflow-tooltip="true"
      />
      <el-table-column label="公告类型" align="center" prop="noticeType" width="100">
        <template slot-scope="scope">
          <dict-tag :options="dict.type.sys_notice_type" :value="scope.row.noticeType"/>
        </template>
      </el-table-column>
      <el-table-column label="状态" align="center" prop="status" width="100">
        <template slot-scope="scope">
          <dict-tag :options="dict.type.sys_notice_status" :value="scope.row.status"/>
        </template>
      </el-table-column>
      <el-table-column label="通知人数" align="center" prop="totalCount" width="100" />
      <el-table-column label="已读人数" align="center" prop="readCount" width="100" />
      <el-table-column label="未读人数" align="center" prop="unreadCount" width="100" />
      <el-table-column label="创建者" align="center" prop="createBy" width="100" />
      <el-table-column label="创建时间" align="center" prop="createTime" width="140">
        <template slot-scope="scope">
          <span>{{ parseTime(scope.row.createTime, '{y}-{m}-{d}') }}</span>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-view"
            @click="handleDetail(scope.row)"
          >详情</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['system:notice:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['system:notice:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改公告对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="780px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-row>
          <el-col :span="12">
            <el-form-item label="公告标题" prop="noticeTitle">
              <el-input v-model="form.noticeTitle" placeholder="请输入公告标题" />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="公告类型" prop="noticeType">
              <el-select v-model="form.noticeType" placeholder="请选择公告类型" @change="handleNoticeTypeChange">
                <el-option
                  v-for="dict in dict.type.sys_notice_type"
                  :key="dict.value"
                  :label="dict.label"
                  :value="dict.value"
                ></el-option>
              </el-select>
            </el-form-item>
          </el-col>

          <!-- 公告类型：截止日期 -->
          <el-col :span="12" v-if="form.noticeType === '2'">
            <el-form-item label="截止日期" prop="endTime">
              <el-date-picker
                v-model="form.endTime"
                type="datetime"
                value-format="yyyy-MM-dd HH:mm:ss"
                placeholder="请选择截止日期"
                style="width: 100%"
              />
            </el-form-item>
          </el-col>

          <!-- 通知类型：部门 + 指定人员 -->
          <el-col :span="12" v-if="form.noticeType === '1'">
            <el-form-item label="部门" prop="deptIds">
              <treeselect
                v-model="form.deptIds"
                :options="deptOptions"
                :show-count="true"
                :multiple="true"
                placeholder="请选择部门"
                @input="handleDeptChange"
              />
            </el-form-item>
          </el-col>
          <el-col :span="12" v-if="form.noticeType === '1'">
            <el-form-item label="特定人员" prop="userIds">
              <el-select v-model="form.userIds" multiple clearable filterable placeholder="请选择人员（可不选默认全员）" :loading="userLoading" @visible-change="visible => visible && preloadUsers()">
                <el-option v-for="u in userOptions" :key="u.userId" :label="u.nickName + '（' + u.userName + '）'" :value="u.userId" />
              </el-select>
            </el-form-item>
          </el-col>

          <el-col :span="24">
            <el-form-item label="状态">
              <el-radio-group v-model="form.status">
                <el-radio
                  v-for="dict in dict.type.sys_notice_status"
                  :key="dict.value"
                  :label="dict.value"
                >{{dict.label}}</el-radio>
              </el-radio-group>
            </el-form-item>
          </el-col>
          <el-col :span="24">
            <el-form-item label="内容">
              <editor v-model="form.noticeContent" :min-height="192"/>
            </el-form-item>
          </el-col>
        </el-row>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>

    <!-- 详情统计对话框 -->
    <el-dialog title="公告详情" :visible.sync="detailOpen" width="600px" append-to-body>
      <div style="display:flex;justify-content:space-between;margin-bottom:12px;">
        <div style="flex:1;text-align:center;border:1px solid #eee;border-radius:4px;padding:12px;margin-right:8px;">
          <div>通知范围人数</div>
          <div style="font-size:22px;font-weight:600;">{{ detail.totalCount || 0 }}</div>
        </div>
        <div style="flex:1;text-align:center;border:1px solid #eee;border-radius:4px;padding:12px;margin-right:8px;">
          <div>已读人数</div>
          <div style="font-size:22px;font-weight:600;">{{ detail.readCount || 0 }}</div>
        </div>
        <div style="flex:1;text-align:center;border:1px solid #eee;border-radius:4px;padding:12px;">
          <div>未读人数</div>
          <div style="font-size:22px;font-weight:600;">{{ detail.unreadCount || 0 }}</div>
        </div>
      </div>
      <el-descriptions :column="1" size="small" border>
        <el-descriptions-item label="标题">{{ detail.noticeTitle }}</el-descriptions-item>
        <el-descriptions-item label="类型"><dict-tag :options="dict.type.sys_notice_type" :value="detail.noticeType"/></el-descriptions-item>
        <el-descriptions-item label="截止日期" v-if="detail.noticeType==='2'">{{ detail.endTime }}</el-descriptions-item>
        <el-descriptions-item label="创建时间">{{ parseTime(detail.createTime) }}</el-descriptions-item>
        <el-descriptions-item label="内容"><div v-html="detail.noticeContent"/></el-descriptions-item>
      </el-descriptions>
      <div slot="footer" class="dialog-footer">
        <el-button @click="detailOpen=false">关 闭</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listNotice, getNotice, delNotice, addNotice, updateNotice } from "@/api/system/notice"
import { deptTreeSelect } from "@/api/system/user"
import { listUser } from "@/api/system/user"
import Treeselect from "@riophae/vue-treeselect"
import "@riophae/vue-treeselect/dist/vue-treeselect.css"

export default {
  name: "Notice",
  dicts: ['sys_notice_status', 'sys_notice_type'],
  components: { Treeselect },
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 公告表格数据
      noticeList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 详情弹窗
      detailOpen: false,
      detail: {},
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        noticeTitle: undefined,
        createBy: undefined,
        noticeType: undefined,
        status: undefined
      },
      // 表单参数
      form: {},
      // 部门树与用户选项
      deptOptions: [],
      userOptions: [],
      userLoading: false,
      // 表单校验
      rules: {
        noticeTitle: [
          { required: true, message: "公告标题不能为空", trigger: "blur" }
        ],
        noticeType: [
          { required: true, message: "公告类型不能为空", trigger: "change" }
        ],
        endTime: [
          { required: true, message: "请设置公告截止日期", trigger: "change", validator: (rule, value, callback) => {
            if (this.form.noticeType === '2' && !value) callback(new Error('请设置公告截止日期'))
            else callback()
          }}
        ],
        deptIds: [
          { required: true, message: "请选择部门", trigger: "change", validator: (rule, value, callback) => {
            if (this.form.noticeType === '1' && (!value || value.length === 0)) callback(new Error('请选择部门'))
            else callback()
          }}
        ]
      }
    }
  },
  created() {
    this.getList()
  },
  methods: {
    /** 查询公告列表 */
    getList() {
      this.loading = true
      listNotice(this.queryParams).then(response => {
        this.noticeList = response.rows
        this.total = response.total
        this.loading = false
      })
    },
    // 取消按钮
    cancel() {
      this.open = false
      this.reset()
    },
    // 表单重置
    reset() {
      this.form = {
        noticeId: undefined,
        noticeTitle: undefined,
        noticeType: undefined,
        noticeContent: undefined,
        status: "0",
        endTime: undefined,
        deptIds: [],
        userIds: []
      }
      this.userOptions = []
      this.resetForm("form")
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1
      this.getList()
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm")
      this.handleQuery()
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.noticeId)
      this.single = selection.length!=1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset()
      this.open = true
      this.title = "添加公告"
      // 预加载部门树
      this.loadDeptTree()
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset()
      const noticeId = row.noticeId || this.ids
      getNotice(noticeId).then(response => {
        this.form = Object.assign({}, response.data, {
          deptIds: response.data.deptIds || [],
          userIds: response.data.userIds || []
        })
        this.open = true
        this.title = "修改公告"
        this.loadDeptTree().then(() => this.preloadUsers())
      })
    },
    /** 详情按钮操作 */
    handleDetail(row) {
      getNotice(row.noticeId).then(res => {
        this.detail = res.data
        this.detailOpen = true
      })
    },
    /** 提交按钮 */
    submitForm: function() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          const payload = Object.assign({}, this.form)
          if (payload.noticeType === '1' && (!payload.userIds || payload.userIds.length === 0)) {
            // 不选人员默认部门全员，由后端按规则处理；这里不做额外处理
          }
          if (this.form.noticeId != undefined) {
            updateNotice(payload).then(response => {
              this.$modal.msgSuccess("修改成功")
              this.open = false
              this.getList()
            })
          } else {
            addNotice(payload).then(response => {
              this.$modal.msgSuccess("新增成功")
              this.open = false
              this.getList()
            })
          }
        }
      })
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const noticeIds = row.noticeId || this.ids
      this.$modal.confirm('是否确认删除公告编号为"' + noticeIds + '"的数据项？').then(function() {
        return delNotice(noticeIds)
      }).then(() => {
        this.getList()
        this.$modal.msgSuccess("删除成功")
      }).catch(() => {})
    },
    // 公告类型变更时加载必要数据
    handleNoticeTypeChange() {
      if (this.form.noticeType === '1') {
        this.loadDeptTree()
      }
    },
    // 加载部门树
    loadDeptTree() {
      return deptTreeSelect().then(response => {
        this.deptOptions = response.data
        return response
      })
    },
    // 部门变化时，刷新用户列表
    handleDeptChange() {
      this.preloadUsers()
    },
    // 预加载选中部门下的用户
    preloadUsers() {
      if (!this.form.deptIds || this.form.deptIds.length === 0) {
        this.userOptions = []
        return
      }
      this.userLoading = true
      const promises = this.form.deptIds.map(deptId => listUser({ pageNum: 1, pageSize: 1000, deptId }))
      Promise.all(promises).then(resArr => {
        const map = {}
        const users = []
        resArr.forEach(res => {
          (res.rows || []).forEach(u => {
            if (!map[u.userId]) {
              map[u.userId] = true
              users.push(u)
            }
          })
        })
        this.userOptions = users
      }).finally(() => {
        this.userLoading = false
      })
    }
  }
}
</script>
